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Finding the Fourth Proportional to 436,266.40, 654,399.60 and 330,512.80

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Solution

The fourth proportional to 436,266.40, 654,399.60 and 330,512.80 is: 495,769.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,266.40 : 654,399.60 = 330,512.80 : x
  2. Step 2: Convert to fraction form
    436,266.40/654,399.60 = 330,512.80/x
  3. Step 3: Cross multiply
    436,266.40x = 654,399.60 × 330,512.80
  4. Step 4: Simplify right side
    436,266.40x = 216,287,444,114.88
  5. Step 5: Solve for x
    x = 216,287,444,114.88/436,266.40
  6. Step 6: Final answer
    x = 495,769.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.